Electric-lamp socket.



G. W. GOODRIDGE & G. B. THOMAS.

ELECTRIC LAMP SOCKET.

APPLICATION FILED MAY 8.1915.

Patented Feb. 22, 1916.

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G. Wl GOODRIDGE & G. B. THOMAS. ELECTRIC LAMP SGCKYET. APPLICATION FILEDIIIAY 8. I9I5.

1 172,980. Patented Feb. 22, 1916.

2 SHEETS-SHEET 2.

A posite .A CORPORATION F CONNECTICUT.

ELECTRIC-'LAMP SOCKET.

intenso.

Specification of Letters Patent.

Patented Feb. 22, 1916..

Application led May 8, 1915. Serial No. 26,767.

To all whom t may concern Be it known that we, GiLBER'r W. Goon- RIDGEand GEORGE B. THOMAS, `both citizens of the United States of America,and residing at Bridgeport, in the county of Faireld and State ofConnecticut, have invented a certain new and useful Improvement inElectric-Lamp Sockets, of which the following is a specification.

Our invention relates to lamp socketsand particularly to a socket havingcombined casing and shade holder, the object of our invention being toprovide an improved device 0f this character especially adapted for asocket embodying a pull switch mechanism.

In the accompanying drawings, Figure 1 is a vertical section through asocket in which our invention is embodied in illustrative vmanner; Fig.`2 is an invertedplan thereof; Fig.A is a section on the line 3 3, Fig.1; Fig. 4 is a dropped perspective of the switch mechanism; Fig.v 5 is aperspective of the operating lever and ratchet drawn to an enlargedscale and inverted from the position shown in Fig. 4; Fig. 6 is a brokenelevation of the socket; Fig. 7 ,isa vertical section drawn to a largerscale of the body of the socket showing the connection to one of theswitch terminals; Fig. 8 is a perspective showing the connections fromthe wire terminals apart from the insulating body of the socket; Fig. 9is a plan of the body of the socket similar to Fig. 3 but with theactuating lever in position; and Fig. 10 is a `dropped perspective ofthe center contact elements.

The socket in the form here shown comprises a one-piece casing 10 ofthegeneral type illustrated in the copending application of Goodridge andThomas Serial No. 4457 and having at its .lamp receiving end anoutwardly flared -flange 11 adapted to receive supporting means of anysuitable type, such as set screws 12 by which the shade 13 may besupported. The nipple 14 at the opend of the socket affords means forsecuring the same to a fixture pipe 15 or the like through whichy thewires 16 are led to the socket: Within the casing an insulating body 17,comprising outer and inner buttons A and B respectively is secured bymeans of screws 18 taking into the threaded ends of a yoke '19 clampedwithin the head 'of the the two buttons.

` into the upper offset of tion of the ccives the head 51 of thel screwsocket by the nipple 14. The two buttons A and are normally securedAtogether by means of standards 2O and 21, arranged within the switchchamber 22 formed by cooperating recesses in the meeting-faces of Ascrew 23 passing through the .outer button A takes into the base Aof thestandard 20, while a short screw .24 passing through the upper buttontakes this standard, (see A corresponding long screw 25 takes into thebase of the standard 21 'and a short screw 26 passing through the upperbutton engages the upper end of this standard. The latter carries athreaded teat 27 lying within the area of the porcelain body butprojecting outward in a recess 28 formed Fig. 7).

in the casing, so that in the assembled posibody within the casing achain bell 30 internally threaded may be passed through the aperture 29in the casing and threaded upon the teat 27 (see Fig. 6).

The wire terminal plates 3l and 32 are let into recesses in the outerface of the blitton A adjacent the wire holes 33, 34, which pass throughboth buttons to the inner end of the receptacle. The terminal plate 31is connected by screw 35 to a strap 36 carrying a switch terminal 37 andis thus in electrical connection with the latter. The terminal plate 32is connected by screw 38 to strap 39, which in turn is connected byscrew 40 with the screw shell 41 of the socket and is thus in constantelectrical connection with the latter.

Within the switch chamber'22 a rotary of which diametrically oppositethat over which the switch\terminal 37 lies is a second switch contact46 electrically connected and preferably integral with a disk 47 whichpasses through a gap 48 in the side of the boss and enters a centralwell 49 in the latter. A metal cup 50 overlies the disk 47 and re- 52which passes through the base of the cap anddisk 47 and acentralperforation 53 communieating with the well 49. The base 54 of thecenter contact 55 is apertured to receive the therein and registeringwith an aperture 29 end of the screw 52 and the securing nut 56,threaded onto the bolt electrically connecting the center contact withthe switch terminal 46 and at the same time mechanically securing thecenter contact in the recess 57 in which the latter is accommodated inthe outer face of the button A. Above thehead of the bolt 51 is arrangedan insulating cup 58 in which the lower end of the switch spindle 59rests. This insulating cup is normally supported somewhat above the headof the bolt 52 by a coil spring 60 so that the spindle may be slightlydepressed to displace its rectangular head 61 out of its seat in theupper button B to properly tension the switch spring 62, yone end owhich is engaged by the head 61, and the other end by a lug 63 on oneface of the actuating ratchet 64. The latteris carried by a switch lever65, here in the form of -a rsegmental disk of insulation, and hasratchet teeth 66 struck up therefrom to engage the edges of the arms ofthe switch piece 42 in well known manner. The chain rail 67 is mountedon one face of the actuating lever 65 and the chain 68, one end of whichis gripped by the claw 69, at the end of the chain rail, passes outthrough the bell 30 in position for manual actuation. In order to haveaccess to the chain rail after the buttons A and B have been assembled,the latter are recessed in register to form a lateral aperture 70opening to the switch chamber at the point at which the chain rail liesin the assembled position of the parts.

rI`he invention is not limited to the particular type of pull switchmechanism illustrated, that shown being merely an illustrativeembodiment of our invention. Various modifications of the constructionwill readily suggest themselves to those skilled in the art and do notdepart from what we claim as our invention.

We claim as our invention 1. A pull socket comprising an insulating bodyhaving wire terminals at the lampreceiving end of the socket,independent wire passages extending from said terminals through the bodyof the socket to the rear thereof, a switch chamber within the body ofthe socket, a switch within said chamber, an electrical connectionthrough said switch to one of the lamp terminals, and a permanentelectrical connection from the other lamp terminal to the other lineterminal, said connection being established through the switch chamber.A

2. In an electric lamp socket, an insulating body comprising a pair ofinsulating buttons recessed on their meeting faces to form a switchchamber, lamp terminals mounted on the outer face of one of saidbuttons, wire terminals on the same face of 1,17a,9so

said button, a conducting strap within the switch chamber, a boltconnecting said strap with one of the wire terminals, and a switchterminal within the chamber in electrical connection with said strap.

3. In an electric lamp socket, an insulating body comprising a pair ofinsulating buttons recessed on their meeting faces to forma switchchamber, lamp terminals carried on the outer `face of the outer button,wire terminals on said outer face of the latter, a conducting strapwithin the switch chamber, a bolt connecting the same with one of thewire terminals, a switch terminal within the chamber in electricalconnection with said strap, in combination with a standard secured bythe bolt from said wire terminals and a cooperating screw passingthrough the inner button and taking into said standard to secure saidbuttons together.

4. In a pull socket, a pair of insulating buttons recessed on theirmeeting faces to form a. switch chamber, a standard connecting saidbuttons and having an outwardlyfaced, hollow-threaded teat within thearea of the switch body to afford connection fo-r a. chain bell. v

5. In a pull switch, a metallic casing, and within the Same a pair ofinsulating buttons forming a switch body, said buttons being recessed ontheir meeting faces to form a switch chamber, a pair of conductingstraps lying within said chamber, a pair of lamp terminals on the outerface of the outer button, a pair of wire terminals on the same face ofsaid button and electrical and mechanical connections therefrom to saidconducting straps within the switch chamber.

6. In a pull switch, a pair of insulating buttons forming the 4bodythereof recessed on their meeting faces to form a switch chamber, a.pair of conducting straps lying within said chamber, a pair of lampterminals on the outer-face of one of said buttons, a pair of wireterminals on the ycorresponding face of said button andelectromechanical connections therefrom to said conducting straps withinthe switch chamber, a switch contact within said chamber electricallyconnected with one of said straps and means for electrically connectingthe other of said straps to -one of the lamp contacts.

In testimony whereof we have signed our names to this speciicatiomin thepresence of two subscribing witnesses.

GILBERT WV. GOODRIDGE. GEORGE B. THOMAS.

Vitnesses CARL ERIC ANDERsoN,

H. M. WICHERT.

